Wireless transmission of sonorous vibrations.



E tails of construction which will be more fully explained UNITEDsTA'IEs PATEN HENRY A. MCCARTnOF SAN FRA MCCARTY,'DECEASED, ASSIG CISCO,CAL

Be it known thatjFnANcIs JOSEP ing in thecity and `county of SanAFrancisco, State of Qalifornia, invented newvand useful Improvements in.oilwhich the following is a specification.

. Wireless Transmission of Sonorous Vibrations of wires or othermechanical in between the stations.

It consists in the combination of devices, and in deby reference to theaccompanying drawings, in which the figure is a diagrammatic viewillustrating the invention; v

In this invention an induction coil is employed having a secondarywinding A, and a primary winding 2.

.The secondary coil is connected inthe usual manner with the two sidesof a spark gapV `4.

The terminal 5 oi the primary Windingis connected v tojo'ne pole of adynamo D, and the other terminal 5 of the primary winding is connectedthrough an arc y6 to the other poleof the dynamo.

, 7 is a wire connecting with `the center of theI primary coilanduniting with the dynamo upon the same side with the wire 5, and withinthis connection 7. is an interrup'ter 8. V Y

.9 represents a magneticr blow-out which is `energized through thetelephone transmitter 10 in circuit with a set of batteries as at 11.The magnetic blow-outfis placed in close proximity 'to the arc 6.

The action in this apparatus' is as follows: The current from the dynamoDis made to lowrin the direction of the arrow through half' of theprimarywinding 2, thence through the connection 7,` through theinterrupter 8 and back to the dynamo,'this being the shortest path'andwith less resistance than the path through arc 6. At the moment that theinterrupter 8 breaksthe circuit,` then the path through the arc 6becomes mo mentarily the path'for the current, which produces a steadymagnetic field. This steady magnetic field produced in the primary bythecurrent alternately flowing through-the arc in -unison'with thebreaks of the interrupter, servesl tOneutral-ize and govern thevariations of the magnetic iield inthe primary, which is produced -bythe interruptedV circuit through 7. ConsequentlyA no discharge occurs asyet at spark-gap 4; But as soon as magnetic blow-out 9 isvocally'en'ergized through a battery, the arc 6 is varied by theblow-Out in unison NCI'SOO',` CALIFORNIA,` ADMINISTRA Non To MCCAETYWIREL E CALIFORNIA.

Specificatipn of Letters Patent.

mui 20,1906. .Serin No. 335,397.'

p II MCCA'RTY, de` ceased, formerly a citizenl of the UnitedStates,`resid`` -4 of the voice.

This invention'relatesl to an apparatus by whichgeo. jnorous vibrationsmay be transmitted without `lilieaid termediate connections.,

T OFFICE@ A IOR OF FRANCIS JOSEPH ESS TELEPHONE CO..,'OF SAN ERAN-U orvsoNoImIIS vIBRA'rIo'Ns; j

Patented oet 8,190.7;

with the variations of the voice and thisdecreasingof the currentin thecircuit through the arc 6 by the mode" ulations of the voice allowsthelvariations of the magy Anetic field produced by the interruptedcircuit''along through 7 to gain the ascendency' and produce dis- 55chargesat the spark gap in unison with the modulations f Having thusdescribed my inventiomwbatl claim Il, and desire to secure by LettersPatent is- 1. In anv apparatus for the; transmission of sonorousvibrations, a primary coil, a. source of electrical energy with ywhichit -is connected, a secondary coilvand sparkl gap` device, a returnconnection from'the central portion of thel primarycoil, saidreturnhaving an lnterrupter locatedlwithinitslength, and means located in the-main portion of theprimary' circuit to independently vary the currentdowing therethrough. v v f 2. In an apparatus for transmitting sonorousvibrations a primary coil, a. secondary coil and spark-gapk devices, asource of electrical energy withwhic the primary coil is connected, aconnection between the central portion of the primary c oll and thesource of electrical energy, an interruptor disposed in the circuit ofthe said intermediate connection, an arc light located in the maincircuit of the primary` and beyond the interrupter circuit, und meanswhereby the impulses created by sonorous vibrations actto independentlyvary `the'vlbratlons in the cirrcuit.

' In an apparatus for transmitting sonorous vibrations, a primary' coil,a source of electrical energy with` which itis connected, a secondarycoil energized by said primary coil having` a Aspark-gap device, areturn wire connecting with. the central portioxilof the primary coilhavingan interrupter disposed in its'icircul't, an arc light located inthemain circuit bythe primary; a magnet contiguous to 854 the arc,atelephone-transmitter, and electrically energized connection between thetransmitter and the magnet.'

4. In n n apparatusfor the transmission 'of sonorous 1^ vibrations, aprimary coll, a source of electrical energy connections between saidcoil and the source 'of electrical 90 energy, a secondary coilenerglzedby the primary coll and having a spark gap device, anintermediate circuit connecting the central portion of tire primary coilwith the source of electrical energy, an interruptor located ln saidcircuit, an larc light .incircuit with lthe remainder of the primarycircuit, a telephone transmitter, and an electrically energized magnetlwith which the transmitter is connected, 'said magnet being located inclose proximity 'with the arc light. v

5. In an apparatus for transmitting sonorous vibrations, a primaryc'oil, a' source of electrical energyfrom which l currents aretransmitted through 'thecoi1, a secondary coll energized by Asaidprimary and having a sp:1rk emp device, a circuit connecting the centralportion of thc primary coil with the source of electrical energy, anintorrupter located in said circuit, un nrc iight located in the.exterior portion vof the primary circuit and normally nou` v tralizingthe variations of the magnetic leld o the inter#l rupted circuit. f

vto

"'tral portionV if'ftheI 'yl In Ian, nppnretxis. for .translnittiiigsonorous,- vibrations,

a. primary coil with-menne fortransnilttingan electrical controiieii'mennsflocnted, in'fthat portion fof. the. primary Jrcnit extcriorg. to'ftli s iiortcircuit-and varying the cur rent of vthe short circuit.

cuit. connecting. thefcentrai portion' of the yprimary coll poseo inthecireniaafud yocaiiycontroiled means connecting with themain'portionlothe primary' circuit for va -ing `the currc'nhof the. circuit.

l '8f lnan ippm'gtusior.trnsmltting sonorous vibrations, a primarycoli,'n'source offelectrical energyconnected therewith. secondary c'olwitlilmspark `ga'p, saii coil 4being @itemized-by the prln'inry-,coiha`circnit 4cimnccting the centraliportlonof the primary coil with thesource of electrical energy;- an arc` light located within the rernain-,yder of the primary circuit, an electro m'agnct located contiguons tethe are, axbattcry, and :i telellwlle tl'nllsmittl in circuitwiththebatte-ry. f

9. In'an a'pparatusfor transmitting sonorous-'vihra'tiona anelectrically 'energized 'primary coil, a sourceofcicctricaLe'nei-gy vacircuit,connecting the central portion of .the primary oil with thesource'of` electricnlencrgy and hayfin'gnn interrupter disposed initscircuit, :1n arc light located inthc'remaind'erof the primary circuitand acting scrlbing witnesses.

semen to neutralize the variations of the magnetic field in the primaryproduced l)y the interrupted ci1cuit,fan` eleciro magnet-contiguous tothenrc, and :i telephone transmitter nndbzlttery in clrcuit'with theeicctr'o umgnc'i'.

10. In`an `upparatusfor transmitting sonomns vibrntions n vseconrinrycoli lnuilng :15pm-k gap in circuit, :in electrically 'energized prlnmrycoil, rsonrce of eleclricnl energy a circuit; connecting the. contrai"portion of snlgi coll` -with tliesou'rce of clect'ricnl energy, aninterruptor ln sziiil -netic iieldofy said' circuit, ntelephonetransmltter-y'hnd .conuectionswhereby the `sparkgaip discharges.fu-e .varied by vocailrnpnises'through the trnsmiitcr.

In testimony whereof I, HnNnY A1 llluCAnrr, Anilminlsi tratoro'fvtheestateo ,FM-:gers .osnrn MCC/urn", deci-used hove. hereunto setmy' hand `in this -presence of two' suhimNRif A. Mcc..\n'rY,.fidministrutm of Hu astuto of Finnois .losvjih .iid/'orly` dcco'usf'd.

Witnesses S. H. Nonnsn,

Fin-:mamen E. illumini

